Configure TLS with LetsEncrypt and Certbot

Cyberwatch can use Certbot and LetsEncrypt to generate a valid TLS certificate. This requires the Cyberwatch machine to be accessible from the internet. The renewal of the certificate is automatic. The following steps describe how to enable the management of the certificates by Certbot. They can be followed during Cyberwatch installation or after Cyberwatch has been installed.

Prerequisites

Cyberwatch must be installed with the Docker Swarm Orchestrator. The Kubernetes Orchestrator is not supported
The Cyberwatch machine must be accessible through HTTP for URLs matching:
```
http://<domain-name>/.well-known/acme-challenge/*
```

Configuration

Reconfigure Cyberwatch with the Certbot feature:
```
sudo cyberwatch configure --certbot
```
If your instance is more complex than a single node, you need to specify again which configuration to use.
For instance, on a master node with an external database, the command is:
```
sudo cyberwatch configure --certbot --master --no-db
```